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Communication: FOURTH PERIOD

A randomized 25 question test from a pool of 761 questions, good luck!
A DCS collects a lot of data during the course of operating. Which of the answers below best represents the number of databases commonly used in a DCS?
The numerous tasks that are accomplished at the same time in a DCS, is a result of the configured software programs that it has . Which of the software programs below will governed by IEC-61131-3?
A defined area of geographical coverage is commonly called an area network. Which of the area networks below is the smallest in area covered?
IPv4 addresses are expressed in four components. Which of the terms below is used to name those four components?
The addition of BCC to the message frame increases the efficiency of detecting errors in transmissions. which one of the error check systems employs a calculated total by the receiver in comparison to the total of the received data?
Due to the uncomplicated nature of the Modbus frame structure, it requires a simple access method. Which of the access methods below is a method that this frame structure supports?
In a typical GUI, values take one of four generic indicators. Which of the indicators below would best represent the image below?
Which of the signal transmission systems below best describes the operation of an Ethernet cord?
The heart of a DCS is considered the PLC and it's five main programming languages. Which of the programming languages would be described as mimicking the components of the hardware of an analog control in self-contained blocks of code?
The quality of a OUT parameter status field has several different classifications. Which of the classifications below can be described as the value may be useful, but of diminished quality?
Baseband NRZ signalling is the standard for all physical connections with Ethernet. Which of the signalling methods below has the disadvantage of losing the clock signal when spaces are transmitted for an extended series?
There are several layers in the DCS architecture. Which of the levels below would have direct control over the alarming system?
A media access control address is the name of the physical address that the Ethernet uses. Which of the answers represent the number of bytes that make up this MAC?
Any SCADA system must adhere to universal standards which allow smooth communication over international boundaries. Which of the standards below would be an uniquely SCADA communication protocol?
There are several types of converters. Which one of the answers below is best known as a "Gateway"?
Model based network devices are at the user level of Ethernet/IP. Information of a capabilities or features of a specified device would be contained in which of the text files below?
There are several common components of signal converters. Which one is best described as transforming the input signal to the required output signal?
Which of the lengths below relates best to a spur cable with 3 field devices connected?
There are several layer within the a typical DCS., each with it's own responsibilities. Which of the levels below is responsible for the maintenance and configuration of the control system?
In Modbus, data is read, and written in various memory ranges. Which of the answers below best represents the data type that a coils would use?
SCADA control systems are similar to other control system, but the components for a SCADA system vary slightly. Which of the components below would be designed to reduce transmission of historical data?
In a typical GUI, values take one of four generic indicators. Which of the indicators below would best represent the image below?
Which of the components below best represents the letter "B"?
Which of the data transmission modes below best is described as a one way transmission?
Which of the answers below best describes the role of a modem in a signal transmission system?